Improvement in devices for starting pendulum-clocks



3SheetsSheet1. E. A. LOURDELET. DEVICE FOR STARTING PENDULUZM CLOCKS. No. 177,137. Patented May 9,1876.

N. PETERS, PNGTO-LITHOGRAPNER. WASHINGTON. D C.

3 Sheets-Sheet 2. E. A. LOURDELET.

DEVICE FOR STARTING PENDUL'UM CLOCKS. No. 177,137. Patented May 9,1876.

N. PETERS. PNOTO-LITHOGRAF'HER. WLSHXNGTON. D. c.

SSheets-Sheet 3. E. A. LOURDEL ET DEVICE FOR STARTING PENDULUM'CLOCKS. No. 1775137. Patented May 9,1876.

NPEI'ERS, PHOTD-LITHOGRAPNER. WASHINGTON, 1C.

UNITED STATES PATENT OFFICE.

ERNEST A. LOURDELE-T, OF PARIS, FRANCE.

IMPROVEMENT IN DEVICES FOR STARTING PENDULUM-CLO CKS.

Specification forming part of Letters Patent No. 177,137, dated May 9, 1876 application filed March 27 1876.

i To all whom it may concern Be it known that I, ERNEST ALFRED Lona DELET, of Paris, France, have invented an Improved Device for Starting Pendulum- Olocks; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed sheets of drawing, making a part of the same.

My invention relates to a device applied to pendulum-clocks, of the ordinary drawingroom or mantel-shelf kind, for starting the pendulum when the clock is set going again after having stopped. The said device, which I call pendulum-starter or pendulum'impulser, may also be used for stopping the clock whenever requiredas,for instance, when it goes too fast and it is desired to set it at the proper time without turning the hands several times round the dial. The common way of setting such clocks going, after being rewound, is to tilt or move the whole stand or pedestal of the clock, which is inconvenient when the pedestal is large and heavy.

My invention consists in the application of an additional axis in any convenient position in the clock-dial or its pedestal, which axis is squared at the end to receive a key or its equivalent, and carries a lever-arm whose extremity is made by partly rotating the axis to bear against the pendulum-rod and set the latter oscillating. It is preferred to apply this device so that the axis projects through a hole in thelowest point of the dial, and the lever is so arranged as not to interfere with the mechanism of the clock, and the device may therefore be applied indifierently to clocks already made or in new ones.

In order that the invention may be more a movement.

a, dial; 1) I), back and front plates, connected by pillars c, in which the parts of the movements are mounted; d, axis of the working part c, axis of the striking part; f, axis for adjusting the length of the pendulum; g, pendulumrod and h its suspension; j, axis of my pendulum-startin g device, and tits squared end. This axis turns in holes in two small plates, k, fixed to b b, and at its rear end there is keyed the lever-arm I, having an elbow or crank m at its upper extremity, which comes in contact with and pushes the pendulum-rod, when the axis j is turned, by means of a key applied, to the squared end i. The dotted lines show the device in the act of setting the pendulum in motion. a is a spring which returns the lever, after it has performed its office, back to its first position against the stop 0, where it remains out of the way'of the pendulum.

I claim 1. The combination, with the pendulum of a clock, of a rock-shaft carrying an arm for the purpose of starting or stopping the pendulum, as described.

a 2. The shaft j, having squared end i, and

arm l, with elbow m, in combination with spring a, stop-pin 0, and the pendulum, as and for the purpose described.

ERNEST ALFRED LOUTtDELET.

Witnesses:

R0131. M. HOOPER, JEAN BAPTISTE HOLLAND. 

